MSI G52-MA00542 - Manual (Page 26)

Chapter 2
2-14
The mainboard provides connectors to connect to FDD, IDE HDD, case,
modem, LAN, USB Ports, IR module and CPU/System FAN.
Floppy Disk Drive Connector: FDD1
The mainboard provides a standard floppy disk drive connector that
supports 360K, 720K, 1.2M, 1.44M and 2.88M floppy disk types.
Connectors
IrDA Infrared Module Header: IR1
This connector allows you to connect to IrDA Infrared modules. You
must configure the setting through the BIOS setup to use the IR function. The
IR1 is compliant to Intel Front Panel I/O Connectivity Design Guide.
FDD1
1
5
IR1
1 VCC
2 NC
3 IRRX
4 GND
5 IRTX
Pin Signal
IR1 Pin Definition